With ncurses[tinfo] tgoto will be in libtinfo

https://bugs.gentoo.org/539316

--- a/guile-readline/configure.in
+++ b/guile-readline/configure.in
@@ -33,7 +33,7 @@ if test "$MINGW32" = "yes" ; then
 fi
 AC_SUBST(EXTRA_DEFS)
 
-for termlib in ncurses curses termcap terminfo termlib ; do
+for termlib in ncurses curses termcap terminfo termlib tinfo ; do
    AC_CHECK_LIB(${termlib}, tgoto,
                 [LIBS="-l${termlib} $LIBS"; break])
 done